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Old November 20, 2012, 10:54 AM   #47
Dave P
Senior Member
 
Join Date: August 16, 1999
Location: North Florida
Posts: 1,131
Case wall thickness

"A big contributor to this is cases with quite uneven case wall thickness."

I am often amazed at Lake City Match brass (308) , and how inconsistent the walls are. This is 1970-1980 kinda years.

To check these, I slowly roll them across a flat surface, while listening and watching them. (That's a new one: "Listen to your cases, men!"). Anyway, it is quite obvious when I find a lopsided case: you can hear them speed-up and slow down, and watch as the heavy side comes to rest at the bottom.

I end up culling out about 50% of the cases this way. Not at sure that I shoot them better in a service rifle, but it makes me more confident.
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